下面是在macos mojave 10.14.6版本上为我工作的

我安装了当前的jdk(https://www.oracle.com/java/technologies/javase-downloads.html)

然后分别做;

vim . bash_profile 在bash_profile中添加export JAVA_HOME=$(/usr/libexec/ JAVA_HOME 源. bash_profile

完成了。可以使用java -version命令查看版本。

Pre-Requisite:

我已经在我的机器上使用brew安装了java11。

步骤1:酿造信息java11

输出:

/选择/自制/酒窖/openjdk@11

USER1-MacBook-Pro JavaVirtualMachines % brew info java11
openjdk@11: stable 11.0.12 (bottled) [keg-only]
Development kit for the Java programming language
https://openjdk.java.net/
/opt/homebrew/Cellar/openjdk@11/11.0.12 (670 files, 273.0MB)
  Poured from bottle on 2021-10-09 at 13:07:04
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/openjdk@11.rb
License: GPL-2.0-only
==> Dependencies
Build: autoconf ✔
==> Requirements
Build: Xcode ✘
==> Caveats
For the system Java wrappers to find this JDK, symlink it with
  sudo ln -sfn /opt/homebrew/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdk

openjdk@11 is keg-only, which means it was not symlinked into /opt/homebrew,
because this is an alternate version of another formula.

If you need to have openjdk@11 first in your PATH, run:
  echo 'export PATH="/opt/homebrew/opt/openjdk@11/bin:$PATH"' >> ~/.zshrc

For compilers to find openjdk@11 you may need to set:
  export CPPFLAGS="-I/opt/homebrew/opt/openjdk@11/include"

==> Analytics
install: 44,188 (30 days), 149,578 (90 days), 433,845 (365 days)
install-on-request: 19,074 (30 days), 63,262 (90 days), 187,286 (365 days)
build-error: 0 (30 days)

步骤2:将openJDK路径附加到现有路径。

echo 'export PATH="/opt/homebrew/opt/openjdk@11/bin:$PATH"' >> ~/.zshrc . bin:$PATH

步骤3:源现有shell或打开新终端以验证更改

来源 ~/.zshrc

步骤4:添加检查路径

而java

输出:/ opt /自制/ opt / openjdk@11 / bin / java

步骤5:

java——版本

openjdk 11.0.12 2021-07-20
OpenJDK Runtime Environment Homebrew (build 11.0.12+0)
OpenJDK 64-Bit Server VM Homebrew (build 11.0.12+0, mixed mode)

我不需要完整的JDK，我只需要让JRE工作，上面提供的其他答案都不适合我。 也许它曾经起作用，但现在(2018年7月1日)不起作用了。我一直得到错误和弹出窗口。

我最终通过在~/.bash_profile中放置以下JAVA_HOME导出来解决这个问题:

export JAVA_HOME=/Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home

希望这能帮助到一些人。 我运行的是Mac OS High Sierra。

在2022年，只有安装了Android工作室:

检查Android studio中是否安装JDK。在Android Studio中，选择文件>项目结构。在SDK条目下，如果没有选择默认JDK，则从列表中选择，如果没有，则添加JDK，然后申请安装。 在Android studio中安装JDK后，只需直接从Android studio中添加JDK路径即可。在终端中运行下面的命令，就完成了。

echo 'export JAVA_HOME="/应用程序/Android Studio. home ="app/Contents/jre/Contents/Home"' >> ~/.zshrc . Home

现在，检查它是否工作。

❯Java -version Openjdk版本“11.0.11”2021-04-20 OpenJDK运行时环境(build 11.0.11+0-b60-7772763) OpenJDK 64位服务器虚拟机(build 11.0.11+0-b60-7772763，混合模式)

不需要从brew安装任何包或创建任何符号链接。Java已经嵌入到Android工作室中，我们可以直接在我们的系统中使用它。

2022年:

一旦安装了Android Studio，就不需要再下载Java了。

尽管Java 11现在已经嵌入到Android Studio中，但在Mac上有时会出现这个问题，无法找到Java运行时。

所以，我通过以下两步解决了这个问题:

In Android Studio go to File > Project Structure. If, under the SDK entry, you can see there is no default SDK selected, but a text in red "No SDK", click on it and you will find an SDK / JDK list, select one of them. Thats it. Make sure you run Android Studio from Application Folder. For this copy the Android Studio launcher to the Application folder. Then in the Finder, go to the Application folder. Right-click on it. Click on "Show package contents", then navigate up to jre folder. Copy the folder and paste it into your home folder.

现在在终端上设置路径:你可以创建一个名为java_jre的文件夹，路径必须设置为jre/contents/Home:

Noors-Mac-mini:bin noorhossain$ export JAVA_HOME="/Users/noorhossain/java_jre/jre/Contents/Home"

//现在检查版本:

Noors-Mac-mini:bin noorhossain$ java -version

openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
OpenJDK 64-Bit Server VM (build 11.0.11+0-b60-7772763, mixed mode)

It's worth noting that with my current version of SQLDeveloper (21.2.1), there's another way to specify the JDK location. In my case, I was able to open up ~/.sqldeveloper/21.2.1/product.conf and set the JavaHome directive to the appropriate directory. I use jabba for JDK version management, and this path was something like ~/.jabba/jdk/amazon-corretto@1.8.292-10.1/Contents/Home. Needless to say, just setting that config value and restarting SQLDeveloper left me with a running copy again. This should work with any version of SQLDeveloper given the product.conf file exists inside your user's .sqldeveloper directory appropriate for the version you are using.